Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
p18INK4cNM_00767110090p18    INK4c    INK4d    Cdkn2c   
p18INK4cBC02702610090p18    INK4c    INK4d    Cdkn2c   

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* OMIM link based on symbol match for human and mouse.

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Text2Knowledge ... Yong Huang 2002